tableView reloadData and deselectRowAtIndexPath - ios

Question

I am using the following code to deselect a selected table view cell when returning back to the table view in -viewWillAppear:animated.
[self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
I also need to reload the table view's data in this case but when you do that it clears the selected state of the selected cell so you don't see any fade animation.
Is there a way to reload the table data and also preserve the selected state to create the deselect animation?

Answer 1

After several attempts, I've found something that works. You need to set the deselection to occur after a "delay" (of 0 seconds) in order to make sure it happens on the next draw cycle and gets animated properly.
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
NSIndexPath *indexPath = self.tableView.indexPathForSelectedRow;
[self.tableView reloadData];
[self.tableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone];
[self performSelector:#selector(deselectRow) withObject:nil afterDelay:0];
}
- (void)deselectRow
{
[self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
}

Answer 2

Try this in your viewDidLoad:
[self setClearsSelectionOnViewWillAppear:NO];

Answer 3

The obvious solution suggested by #user2970476 seems to work fine on iOS 7. For iOS 8 I slightly modified #Stonz2's answer to use blocks
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
dispatch_async(dispatch_get_main_queue(), ^(void) { // necessary for iOS 8
[self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
});
}
I also had to set self.clearsSelectionOnViewWillAppear = NO; in viewDidLoad because the IB setting got ignored.

Answer 4

You will need to reload your table view first, select the row you want to indicate then perform the deselect animation. The issue you are having is your order of operation is incorrect.

Answer 5

You can save the current selection with
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
[self.tableView reloadData];
[self.tableView selectRowAtIndexPath:selectedRow animated:NO scrollPosition:UITableViewScrollPositionNone];